Welcome to One Harmony

Discover a World of Elegance and Refinement in Our Free Membership Program.

Join Us for Special Offers!

Join Us Now


New digital voucher for one-category guestroom upgrades for Loyal & Exclusive Members (“My Voucher”) is now provided. Sign in is required to display the digital voucher. Please click here for display.

Special Offers

5,000 people will win!
One Harmony Lucky Draw Promotion

Register and stay at Okura Nikko Hotels during the promotion period to win up to 10,000 One Harmony points. The more you stay, the higher your chances to win!
Click here for details

Stay Award Promotion!

We are now offering discounts for Stay Award points for an upper-category room of participating hotels. Enjoy an extraordinary stay with your One Harmony points for a limited-time offer.
Click here for details

ADVANCE - early bird discount

Early booking plans are available! Book now online or at your nearest reservation center to enjoy our ADVANCE rate plan and experience Okura Nikko Hotels.
Click here for details

Contact Us

One Harmony Office

Inquiry Form
F. A. Q.
9:30-17:30 JST
(Closed Saturdays, Sundays and Holidays)